guru.mmp.application.web.template.components.BackendUserPanel.java Source code

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Here is the source code for guru.mmp.application.web.template.components.BackendUserPanel.java

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/*
 * Copyright 2017 Marcus Portmann
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package guru.mmp.application.web.template.components;

//~--- non-JDK imports --------------------------------------------------------

import guru.mmp.application.web.template.TemplateWebSession;
import guru.mmp.application.web.template.navigation.NavigationState;
import org.apache.wicket.Component;
import org.apache.wicket.Session;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupElement;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.request.Response;

/**
 * The <code>BackendUserPanel</code> class provides a Wicket component that renders the user panel
 * for the backend user interface for the Web Application Template.
 *
 * @author Marcus Portmann
 */
public class BackendUserPanel extends Component {
    private static final long serialVersionUID = 1000000;

    /**
     * @param id the non-null id of this component
     *
     * @see org.apache.wicket.Component#Component(String)
     */
    public BackendUserPanel(String id) {
        super(id);
    }

    /**
     * Render the backend user panel.
     */
    @Override
    protected void onRender() {
        MarkupStream markupStream = findMarkupStream();
        MarkupElement element = markupStream.get();
        Response response = getResponse();

        if (element instanceof ComponentTag) {
            Session session = getSession();

            if (session instanceof TemplateWebSession) {
                TemplateWebSession webSession = ((TemplateWebSession) session);

                NavigationState navigationState = webSession.getNavigationState();

                if (navigationState.getCachedBackendUserPanelHTML() == null) {
                    if (webSession.isUserLoggedIn()) {
                        String buffer = "<div class=\"user-panel\"><div class=\"pull-left image\"><img src=\""
                                + getRequest().getContextPath() + "/images/user-white.png"
                                + "\" class=\"img-circle\" alt=\"User Image\"/></div>"
                                + "<div class=\"pull-left info\"><p>" + webSession.getUserFullName()
                                + "</p></div></div>";

                        navigationState.setCachedBackendUserPanelHTML(buffer);
                    } else {
                        navigationState.setCachedBackendUserPanelHTML("");
                    }
                }

                response.write(navigationState.getCachedBackendUserPanelHTML());
            }
        }
    }
}